Ques No.1: When a bullet is fired upwards vertically, it gains in __________.
Ans: Potential energy
Ques No.2: The unit of sound is ________.
Ques No.3: _________ is the study of tissues.
Ques No.4: When an object is transferred from the earth to the moon ____________.
Ans: its mass remains unchanged
Ques No.5: The part of the body directly affected by _______ is bone tissue.
Ques No.6: __________ can be used to focus sunlight.
Ans: Concave mirror
Ques No.7: Heart pumps ___________ in a normal human adult (at resting position).
Ans: 5 litre blood per minute
Ques No.8: ___________ is a protein.
Ans: Natural rubber
Ques No.9: The heart of a normal adult human being weighs about 300 grams and that of woman ________.
Ans: 200 grams
Ques No.10: Colour of the skin is due to the presence of __________.